diff --git a/nshlib/nsh_telnetd.c b/nshlib/nsh_telnetd.c
index 05e1a731e..d76308f42 100644
--- a/nshlib/nsh_telnetd.c
+++ b/nshlib/nsh_telnetd.c
@@ -184,7 +184,7 @@ static nsh_telnettoken(FAR struct console_stdio_s *pstate, FAR char *buffer,
 
   /* Replace terminating character with a NUL terminator */
 
-  *endp1 = '/0';
+  *endp1 = '\0';
 
   /* Copied the token into the buffer */